Head of a vacuum cleaner



FIG. 1 is a front, right, top perspective view of a head of a vacuum cleaner in accordance with my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a back elevation view thereof;

FIG. 4 is a left side elevation view thereof

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

CLAIM The ornamental design for a head of a vacuum cleaner, as shown and described. 